公开(公告)号：AT403658T

公开(公告)日：2008-08-15

申请号：AT05740694

申请日：2005-05-13

Applicant: BASF SE

Inventor： LANG ORTMUND ,  FRAUENKRON MATTHIAS

IPC: C07D487/08

Abstract: Process for preparing a solution of pure triethylenediamine (TEDA), in which TEDA is vaporized, the gaseous TEDA is passed into a liquid solvent 1 (quench) and the TEDA is crystallized from the resulting solution and separated off (solid-liquid separation), wherein the crystalline TEDA obtained is dissolved in a solvent 2 and a stripping gas is passed through the resulting solution (stripping).

公开(公告)号：DE50115060D1

公开(公告)日：2009-10-01

申请号：DE50115060

申请日：2001-06-22

Applicant: BASF SE

Inventor： FUNKE FRANK ,  STEINBRENNER ULRICH ,  FRAUENKRON MATTHIAS ,  BOEHLING RALF ,  MELDER JOHANN-PETER ,  HEIDEMANN THOMAS

IPC: C07C209/60 ,  C07B61/00 ,  C07C209/64 ,  C07C211/03 ,  C07C211/05 ,  C07C211/06 ,  C07C211/07

Abstract: Preparation of alkylamines, where, in a first process stage, an olefin is reacted with ammonia, a primary amine and/or a secondary amine under hydroaminating conditions, and then, in a second process stage, the resulting hydroamination product(s) is/are reacted under transalkylating conditions.

公开(公告)号：DE502006000740D1

公开(公告)日：2008-06-19

申请号：DE502006000740

申请日：2006-07-26

Applicant: BASF SE

Inventor： JOEDECKE MICHAEL ,  LANG ORTMUND ,  CAUWENBERGE GUNTHER ,  FRAUENKRON MATTHIAS

IPC: C07D295/00

Abstract: Continuous distillative separation of piperazine from ethylenediamine-piperazine mixture comprises subjecting the piperazine mixture into a cyclic motion, introducing the piperazine mixture into an evaporator unit at 160-170[deg]C, recycling the piperazine mixture into a distillation column and removing the piperazine from the sump of the distillation column after a retention time of approximately 30-60 minutes, where the ethylene diamine is discharged at the upper portion of the distillation column.